Hopex Black Silicon Carbide Waterproof Sandpaper. Custom Logo & OEM/ODM: Accepts logo customization and supports OEM/ODM services for tailored products. Wide Grit Range: Available in grits from P60 to P3000 to meet various sanding needs. Free Sample Offer: Free samples are provided for quality verification before bulk orders. High Water Resistance: Silicon carbide abrasive with good water resistance for wet sanding applications. 30+ Years Expertise: Over 30 years of dedicated experience in advanced abrasives R&D and production. ISO Certified Quality: Manufactured under ISO 9001 & 14001 certified processes ensuring high quality. Fast Response Time: Engineers available for quick response within 24 hours to address inquiries. Quality Guarantee: Free reproduction promised for any quality problems encountered by clients.